244 



BRASSICACEAE 



7. Thelypodium flexuosum Robinson. Perennial Thelypodium. Fig. 1929. 



Thelypodium flexuosum Robinson in A. Gray, Syn. Fl. N. Amer. I 1 : 175. 1895. 



Perennial, glabrous throughout, the caudex clothed with the papery remains of old leaf bases, 

 the stems 3-5 dm. long, slender, sparingly branched, subdecumbent, frequently flexuous, nearly 

 naked above. Basal leaves 8-15 cm. long, numerous, entire, lanceolate, gradually narrowed to 

 the slender petiole; stem leaves distant, lance-linear, acuminate, auriculate at the base with 

 linear, acute lobes; petals pale purplish or white, spatulate, about twice as long as the sepals; 

 anthers 1-2 mm. long; inflorescence lax, at first corymbose, at maturity racemose; pedicels 

 slender, divergent-ascending, 5-8 mm. long ; pods conspicuously reticulate, irregularly torulose, 

 15-22 mm. long ; stipe nearly or quite obsolete ; style slender, about 1 mm. long. 



Alkaline flats and meadows, Upper Sonoran Zone; eastern Oregon to northwestern Nevada and north- 

 eastern California. Type locality: near Carson City, Nevada. May-June. 



8. Thelypodium laciniatum (Hook.) Endl. Cut-leaved Thelypodium. Fig. 1930. 



Macropodium laciniatum Hook. Bot. Misc. 1: 341. pi. 68. 1830. 



Thelypodium laciniatum Endl. in Walp. Rep. 1: 172. 1842. 



Thelypodium streptanthoides Leiberg, Contr. U.S. Nat. Herb. 11:299. 1906. 



Biennial, glabrous and more or less glaucous, the stems usually stout, irregularly branching 

 upwards, 3-24 dm. high. Basal leaves petioled, thick, deltoid-lanceolate, 1-5 dm. long, irregularly 

 and deeply lobed ; stem leaves petioled, deeply pinnatifid to subentire ; sepals 4-7 mm. long, white 

 or purplish; petals nearly linear, 7-21 mm. long, about 1 mm. broad, white; inflorescence race- 



1931 



1928. Thelypodium stenopetalum 



1929. Thelypodium flexuosum 



1932 



1930. Thelypodium laciniatum 



1931. Thelypodium integrifolium 



1933 



1932. Thelypodium flavescens 



1933. Thelypodium Lemmonii 



